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Finding the Fourth Proportional to 66,133.20, 91,264.48 and 35,919.12

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Solution

The fourth proportional to 66,133.20, 91,264.48 and 35,919.12 is: 49,568.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,133.20 : 91,264.48 = 35,919.12 : x
  2. Step 2: Convert to fraction form
    66,133.20/91,264.48 = 35,919.12/x
  3. Step 3: Cross multiply
    66,133.20x = 91,264.48 × 35,919.12
  4. Step 4: Simplify right side
    66,133.20x = 3,278,139,808.86
  5. Step 5: Solve for x
    x = 3,278,139,808.86/66,133.20
  6. Step 6: Final answer
    x = 49,568.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.